refactor: rewrite all tests to use native node:test

[zkochan]

Summary

• Replaced tape, jest, and ts-jest with Node.js built-in node:test runner and node:assert module across all 28 packages
• TypeScript tests use node --experimental-strip-types --test
• Removed tape, jest, ts-jest, @types/jest, @types/tape, ts-node from devDependencies
• Net reduction of ~2700 lines in pnpm-lock.yaml from removed dependencies

Test plan

• All 28 test suites pass locally with pnpm -r --no-bail test
• CI passes on all platforms (ubuntu, macos, windows) and Node versions (22, 24, 25)

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Refactors the monorepo’s test infrastructure by migrating packages off tape/jest/ts-jest/ts-node onto Node.js’s built-in node:test runner and node:assert, updating package test scripts accordingly.

Changes:

• Rewrote test files to use node:test and node:assert APIs.
• Updated per-package test scripts to use node --test (and --experimental-strip-types for TS tests).
• Removed legacy test runner dependencies from package devDependencies.

Reviewed changes

Copilot reviewed 56 out of 57 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
write-json5-file/test.js	Migrates tests from tape to node:test + node:assert.
write-json5-file/package.json	Updates test script to node --test; removes tape.
write-ini-file/test.js	Migrates tests from tape to node:test + node:assert.
write-ini-file/package.json	Updates test script to node --test; removes tape.
which-pm/test/index.js	Migrates tests from tape to node:test + node:assert.
which-pm/package.json	Updates test script to node --test; removes tape.
which-pm-runs/test/index.js	Migrates tests from tape to async node:test style (with skip on Windows for bun).
which-pm-runs/package.json	Updates test script to node --test; removes tape.
safe-promise-defer/package.json	Switches TS tests from Jest to node --experimental-strip-types --test.
safe-promise-defer/tests/index.ts	Migrates assertions from Jest expect to node:assert.
run-groups/test/index.ts	Migrates tests from tape to node:test + node:assert.
run-groups/package.json	Switches TS tests from ts-node to node --experimental-strip-types --test; removes tape/ts-node deps.
root-link-target/test.js	Migrates tests from tape to node:test + node:assert.
root-link-target/package.json	Updates test script to node --test; removes tape.
rimraf/package.json	Switches tests from Jest to node --test; removes Jest config/deps.
rimraf/tests/index.js	Migrates assertions from Jest expect to node:assert.
resolve-link-target/test.js	Migrates tests from tape to node:test + node:assert.
resolve-link-target/package.json	Updates test script to node --test; removes tape.
render-help/package.json	Switches TS tests from Jest to node --experimental-strip-types --test; removes Jest deps/config.
render-help/tests/index.ts	Migrates assertions from Jest expect to node:assert and adjusts module import.
rename-overwrite/test.js	Migrates tests from Jest to node:test + node:assert and replaces Jest mocking.
rename-overwrite/package.json	Switches tests from Jest to node --test; removes Jest dependency.
realpath-missing/test.js	Migrates tests from tape to node:test + node:assert.
realpath-missing/package.json	Updates test script to node --test; removes tape.
read-yaml-file/test.js	Migrates tests from tape to node:test + node:assert.
read-yaml-file/package.json	Updates test script to node --test; removes tape.
read-json5-file/test/index.js	Migrates tests from tape to node:test + node:assert.
read-json5-file/package.json	Updates test script to node --test; removes tape.
read-ini-file/test/index.js	Migrates tests from tape to node:test + node:assert.
read-ini-file/package.json	Updates test script to node --test; removes tape.
promise-share/test.js	Migrates tests from tape to node:test + node:assert.
promise-share/package.json	Updates test script to node --test; removes tape.
preferred-pm/test/index.js	Migrates tests from tape to node:test + node:assert.
preferred-pm/package.json	Updates test script to node --test; removes tape.
path-temp/test.js	Migrates tests from tape to node:test + node:assert.
path-temp/package.json	Updates test script to node --test; removes tape.
p-map-values/package.json	Switches TS tests from Jest to node --experimental-strip-types --test; removes Jest deps/config.
p-map-values/tests/index.ts	Migrates assertions from Jest expect to node:assert.
make-empty-dir/test.js	Migrates tests from tape to node:test + node:assert.
make-empty-dir/package.json	Updates test script to node --test; removes tape.
is-subdir/test.js	Migrates tests from tape to node:test + node:assert.
is-subdir/package.json	Updates test script to node --test; removes tape.
is-inner-link/test.js	Migrates tests from tape to node:test + node:assert.
is-inner-link/package.json	Updates test script to node --test; removes tape.
graceful-git/test.js	Migrates tests from tape to async node:test style.
graceful-git/package.json	Updates test script to node --test; removes tape.
dir-is-case-sensitive/test/index.ts	Migrates tests from tape to node:test + node:assert.
dir-is-case-sensitive/package.json	Switches TS tests from ts-node to node --experimental-strip-types --test; removes tape/ts-node deps.
comver-to-semver/test.js	Migrates tests from tape to node:test + node:assert.
comver-to-semver/package.json	Updates test script to node --test; removes tape.
can-write-to-dir/test.js	Migrates tests from tape to node:test + node:assert.
can-write-to-dir/package.json	Updates test script to node --test; removes tape.
can-link/test.js	Migrates tests from tape to node:test + node:assert.
can-link/package.json	Updates test script to node --test; removes tape.
better-path-resolve/test.js	Migrates tests from tape to node:test + node:assert.
better-path-resolve/package.json	Updates test script to node --test; removes tape.

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